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Apple introduces their first ultra notebook – a light, thin laptop with high-capacity battery.

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Curt Herzstark was an Austrian engineer and he refined his pre-war design of a calculator featuring a modified version

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First Colossus operational at Bletchley Park

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First Colossus operational at Bletchley Park

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Designed by British engineer Tommy Flowers, the Colossus is designed to break the complex Lorenz ciphers used by the Nazis during World War II.

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Professor John Vincent Atanasoff receives funds to build a full-scale machine at Iowa State College (now University).

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In 1939, Bell Telephone Laboratories completes this calculator, designed by scientist George Stibitz.